Smooth and Effortless Cuts - The Wood and Metal Reciprocating Saw Blade Set, Tough Box, 20-Piece, enables smooth and effortless cuts in wood and metal. It contains blades for sawing steel pipes, profiles with small diameters and wood with nails. They are compatible with reciprocating saws with an universal shank system. Fits all S-shank reciprocating saws. Features and Benefits: Smooth Cuts Wood and Metal Reciprocating Saw Blade Set, Tough Box, 20-Piece, enables smooth and effortless cuts in wood and metal Contains blades for sawing steel pipes, profiles with small diameters and wood with nails Specifications: Set contents: S 922 EF Flexible for Metal; S 922 BF Flexible for Metal; S 922 HF Flexible for Wood and Metal; S 644 D Top for Wood.